Question

Let `f(x) = x^2 - 3x - 7` how do you find f(-3)?

Answer 1

f(-3) = 11

Explanation:

To evaluate f(-3), substitute x = - 3 into f(x)

`rArrf(color(red)(-3))=(color(red)(-3))^2-3(color(red)(-3))-7`

`=9+9-7=11`